diff --git a/Include/internal/pystate.h b/Include/internal/pystate.h
@@ -52,17 +52,17 @@ typedef struct _PyPathConfig {
    wchar_t *program_name;
    /* Set by Py_SetPythonHome() or PYTHONHOME environment variable */
    wchar_t *home;
-    /* isolated and no_site_import are used to set Py_IsolatedFlag and
       Py_NoSiteFlag flags on Windows in read_pth_file(). These fields
       are ignored when their value are equal to -1 (unset). */
    int isolated;
-    int no_site_import;
} _PyPathConfig;

#define _PyPathConfig_INIT \
    {.module_search_path = NULL, \
     .isolated = -1, \
-     .no_site_import = -1}
/* Note: _PyPathConfig_INIT sets other fields to 0/NULL */

PyAPI_DATA(_PyPathConfig) _Py_path_config;

diff --git a/Include/pystate.h b/Include/pystate.h
@@ -28,7 +28,7 @@ typedef PyObject* (*_PyFrameEvalFunction)(struct _frame *, int);
typedef struct {
    int install_signal_handlers;  /* Install signal handlers? -1 means unset */

-    int ignore_environment; /* -E, Py_IgnoreEnvironmentFlag */
    int use_hash_seed;      /* PYTHONHASHSEED=x */
    unsigned long hash_seed;
    const char *allocator;  /* Memory allocator: _PyMem_SetupAllocators() */
@@ -75,18 +75,42 @@ typedef struct {
    wchar_t *dll_path;      /* Windows DLL path */
#endif

-    /* Private fields */
-    int _disable_importlib; /* Needed by freeze_importlib */
} _PyCoreConfig;

#define _PyCoreConfig_INIT \
    (_PyCoreConfig){ \
        .install_signal_handlers = -1, \
        .use_hash_seed = -1, \
        .coerce_c_locale = -1, \
        .utf8_mode = -1, \
        .argc = -1, \
-        .nmodule_search_path = -1}
/* Note: _PyCoreConfig_INIT sets other fields to 0/NULL */

/* Placeholders while working on the new configuration API